Maintenance; General - ABB MINI-MAG 10D1475 Series Instruction Manual

10D1475 MINI-MAG MAGNETIC FLOWMETER INSTRUCTION MANUAL

5.0 MAINTENANCE

5.1 General

Except for an occasional performance verification check, there is no required routine maintenance
for the Model 10D1475 meters. The flowmeter body is of all welded construction. In the event a
malfunction occurs in the primary, the meter body must be replaced. If supplied, the integrally
mounted signal converter assembly is removable for maintenance or replacement purposes.
The manufacturer offers a Repair/Exchange Program to facilitate replacement of a defective meter or
converter. If the equipment is beyond the warranty limit, under this program a fixed price will be
charged for replacement of defective equipment with appropriate credit issued when the repairable
unit is received by the factory (charges prepaid). The equipment available under this program is as
follows:
• the complete flowmeter with integrally mounted signal converter and installation
hardware
• the flowmeter and primary board, without the signal converter
• the signal converter assembly
The signal converter uses complex electronic circuit components. Generally, due to the complexity of
troubleshooting integrated circuit devices, maintenance beyond the assembly level is not recom-
mended. Also, caution must be used when connecting test probes, as even a momentary accidental
short circuit may damage or destroy an integrated circuit device. Therefore, only trained electronic
technicians who are familiar with CMOS technology and have a background in logic and gating
circuitry should be permitted to service this equipment.
In the event of a malfunction in the signal converter assembly, a replacement pc assembly can be
quickly substituted for the defective assembly, thereby minimizing system down-time. Servicing by
substitution of spare assemblies is generally more economical than stocking a large variety of IC
chips, transistors, diodes, etc. Also, test equipment requirements and the level of technical expertise
necessary are minimized. Should any doubt arise regarding the proper procedure for solving an
existing problem, it is suggested that the user contact his local factory-service facility for technical
assistance.
Some of the IC devices used in the signal converter are static sensitive
and may be damaged by improper handling. When adjusting or
servicing the signal converter, use of a grounded wrist strap is
recommended to prevent inadvertant damage to the integral solid state
All flowmeters and/or signal converters being returned to the
manufacturer for repair must be free of any hazardous materials (acids,
alkalis, solvents, etc.). A Material Safety Data Sheet (MSDS) for all
process liquids must accompany returned equipment. Contact the
manufacturer for authorization prior to returning equipment.
MAINTENANCE
CAUTION
circuitry.
WARNING
5-1